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Shareholders' Equity and Noncontrolling Interest - Class A Common Stock (Details) - USD ($) $ / shares in Units, $ in Millions | May 25, 2017 | May 04, 2017
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Subscription Agreements | Common Stock Class A |  |
Class of Stock [Line Items] |  |
Shares issued in transaction (in shares) |  | 23,500,000
Sale of stock price per share (in usd per share) |  | $ 14.50
Gross proceeds |  | $ 340.8
Conversion of Class B Preferred Stock to Class A Common Stock | Common Stock Class A |  |
Class of Stock [Line Items] |  |
Conversion of class b preferred to class a common (in shares) | 26,100,000 |
Conversion of Class B Preferred Stock to Class A Common Stock | Preferred Class B |  |
Class of Stock [Line Items] |  |
Conversion of class b preferred to class a common (in shares) | 104,400 |

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